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BWS10-Marble
10-Marble
May 8, 2019
Question

I need help with this model

  • May 8, 2019
  • 2 replies
  • 2042 views

Hello,

 

I have a model of a sloped drainpan that I want to change to other dimensions, but when the drainpan gets too wide some bendings give an error.

 

Can any of you look to the file I uploaded and help me.

The parameters for width and length are found in the relations.

 

2019-05-08_10h22_40.jpg

 

 

2 replies

HamsterNL
HamsterNL18-Opal
18-Opal
May 25, 2019

I can't open your Creo 5 model (I'm on Creo 4), but maybe someone else can take a look.

 

Can you share a screenshot of your folded model in a 3D orientation (with the dimensions shown)?

D
dthompson-51-Visitor
1-Visitor
May 27, 2019

BWS,

 

I spent over 2 hours on your model and finally came up with a solution. Your issues are due to model accuracy. Creo doesn't like when you have extremely small surfaces in relation to the overall size of the part, and I think the rounds on the bottom of the pan were making extremely small surfaces which became a problem when the size of the part was increasing in width.

 

What I ultimately did to solve this was right click on PRT_CSYS_DEF, select "Insert Here", go to File > Prepare > Model Properties > Accuracy, change from "Relative" to "Absolute", enter the smallest value I could (0.0015), regenerate, and exit Insert mode. Once I did that I was able to successfully create a drain pan that is 100 x 100 with no regeneration errors, whereas with your original model I couldn't get one larger than 8 x 12 or so.

 

Now at this point it may be tempting for you to change the accuracy of your start parts to Absolute 0.0015 and never have to worry about this again, but I advise against that because I think that lowering the accuracy number can increase regeneration time. (I could be wrong though.) So, I only change model accuracy when absolutely needed, which is usually when I have an unexplainable regeneration error like yours.

 

Hope this helps,
Don

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